20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 15 Plus Carbon 2 Pack water-filtration (x3) Space Bar: Box of

(x3) Space Bar: Box of three spacer bars as required to hot swap one M108S

Nordic Pure 18x18x1 MERV 7 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

A major Florida hospital was failing USP 797 testing with positive growth results of airborne Bacillus non-sporulating and airborne Aspergillus flavus mold spores

For full-strength or reactive applications

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 15 Plus Carbon 2 Pack water-filtration (x3) Space Bar: Box ofImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,